VAT Service Invoice Form - Version 1.10 In UK if a business owner is registered for VAT, then whenever it supplies goods or services to someone else who is also registered for VAT, the supplier must give the customer a VAT invoice. If the business is VAT registered, you can normally only reclaim VAT on purchases made for your business when you have a valid VAT invoice for the purchase. A VAT invoice shows certain VAT details of a sale or other supply of goods and services. It can be either in paper or electronic form. A VAT-registered customer must have a valid VAT invoice from the supplier in order to claim back the VAT they have paid on the purchase for their business.This free VAT service invoice form is formatted using UK currency symbol '£', but you can easily change it to the currency type you like. To do this, first unprotect the Invoice worksheet, and then drag your mouse to select all the cells for which you want to change their format. Then, right-click one of the selected cells and choose Format Cells. On the Number tab of the Format Cells dialog box, choose 'Currency'